Gas range



H. C. MAUL Sept. 5, 1933.

GAS RANGE Filed April 27, 1931 2 Sheets-Sheet l Sept. 5, 1933.

H. C. MAUL GAS RANGE Filed April 27; 1931 2. Sheets-Sheet 2 INVENTOR ATTORNEY Patented Sept. 5, 1933 sire GAS, RANGE Henry C. Maul,

Detroit-Michigan Stove Company,

Detroit, Mich, assignor to Detroit,

Mich, a corporation of Michigan Application April 27, 1931. Serial No. 533,077

14 Claims. (01. 126-39) This invention relates to gas ranges and more particularly to gas ranges of the concealed manifold type.

An object of this invention is a gas range ,5 wherein the' manifold valves, burners, etc. are disposed behind a plate so that they are con cealed from in front. The adjusting. and servicing parts of the valves, burners, etc. must be accessible and accordingly, another object of 10 this invention is a novel assembly of parts which 25 Fig. 2 is an enlarged partial sectionof the stove.

Fig. 3 is a partial top view of the stove front. Figs. 4 and 5 show a nut pocket. Fig. 6 shows a detail of the gas supply line 30 and manifold. 1 Referring to the drawings, it will be seen that burner side of the stove includes a frame work comprising a plurality of angle iron members, only the front two of which, 10 and 11 are 35 shown. ,To this framework are secured side sheets 12 (Fig. 3), and ,a manifold supporting plate 13, there being a top frame 14 supported on the stove frame. Suitablemeans for removably securing the parts to one another for rere pair, replacement, assembly, etc. may be provided and at 15, are illustrated a pluralityof screws by means of which the plate 13 is removably secured to the frame, it being understood, of course, when the latter is once assembled.

The bottom of the stove is not shown, but it will be understood that this part is to be mounted on the frame work; it, .together with the top, the side plates and the back plate, forming 50 an open compartment, partially concealed by the plate 13,-' and containing the burners, the mixing tubes, the manifold, the valves, lighter equipment, and a service drawer, the latter ber ing below the plate 13 and having an ehamelled 05 front plate 10 and a-pull handle 1'7, as indicated.

The plate 13 supports the front leg of the manifold, and into this leg, at the under surface thereof, are threaded a plurality of valves21, each of which includes a body having a nipple 22 leading into the mouth of the mixing tube 0 23. The valve further includes a plug 24 having a squared operating stem 25 passing under the lowermost flange 26 of the plate 13, the stem having afhandle 2'? secured thereto by a set screw 28. g y 5 The mixing tubes have shutter adjusting screws. 29 accessible for manipulation by a straight screw driver passed under the plate 13 when the service drawer is pulled out, this fea ture being shown in my application for Gas 70 stove, Ser. No. 321,787, filed November 26, 1928, of which this application is to be regarded as a continuation in part. a

The nipples 22 are provided with threaded thimbles 30 for regulating the flow of gas from the valves and these thimbles are provided with nut portions 31 whereby they may be rotated and moved on the nipples for adjustment.

Each valve 21 is provided with a spring tension device including a coiled spring 33 dis- 80. posed around the plug stem 25 and within a cap 34, the latter having wings 35 thru which are passed screws 36 threaded into the bosses 3'7 on the body of the valve, these screws holding the cap, spring, and plug in place inthe body. 85 It will be observed that of the five valves shown, the tour which are connected. to top burners are exactly as described, whereas the fifth or central valve includes a union fitting 40 connecting the nipple 22 with-the end 41 of a 0 pipe 12 which leads to an oven burner directly or-to a thermal control valve connected .to an oven burner,- -this feature. being shown in my Letters Patent entitled Oven burner heads No. 1,854,661 issued April 19, 1932, and not being claimed herein.

The'manifold 20 is secured to and supported by the plate 13, the latter having twobrack'ets, each including a pair of bracket members 46 and 47 gripping the manifold 28 between them. The parts 46 and 1'? areheld on the. plate by a bolt 48 passed therethru and provided-with nuts 19 and 50, one of which secures'part l6 to the plate and the other of which secures part 4'? and with it, the manifold, to the plate. The bolt may further be provided with a squared shank, not shown, which-cooperates'with the walls of the squared aperture in plate 13 thru which it passes, this construction preventingrelative rotation between the bolt and theplate. However, 110

nut 49 if tightened upon the bolt, may be found adequate to hold the bolt non rotatable While the nut 50 is being manipulated.

The manifold, at the end 54 is capped and at its other is connected to the rearwardly extending gas supply pipe 55 by two elbows 56 and 57 for purposes to be described. If desired, these elbows may be of a leak proof type, such as are well known to the art.

Further, in order to conceal the valves, the heads of the bolts and screws, and all other working parts, and in order to give a finished appearance to the stove, there is secured to the plate 13 a finishing plate 60 which is enamelled on its front surface, and which is normally flush with the front 16 of the service drawer. This plate, near its lower edge, is provided with a plurality of apertures thru which project the stems 25 of the valves, the handles. being secured to the stems after the plate is mounted in place.

In order to secure the plate 60 to the plate 13, bolts 61 are provided, these projecting thru plate 13 and being secured thereto by nuts 62, Fig. l. A novel form of connection between the bolts 61 and the plate 60 is provided and upon reference to Fig. 4, it will be seen that there are 'welded to the rear of the plate, nut pockets 63, into which nuts 64 are placed after the plate 68 is enamelled, these nuts being then clinched in place by the nut pocket wings 65, Fig. 5. Into these nuts are then threaded the stud bolts 61 to form securing means for the plates 60.

The construction described in the foregoing is particularly designed to meet the servicing requirements of the valves 21. It will be seen that these valves can be serviced in either of two ways, without removing the finishing plates 60 and consequently without the possibility of subjecting the enamelled surface of the latter to chipping, racking, etc.

One method of servicing the valves is to remove handles 27, loosen bracket parts 47, remove the mixing tubes, and break the connection between pipe a2 and the manifold, whereupon the stove can be pulled away from the manifold, so that the plates 13 and 60 will be in the dotted line position of Fig. 2, with respect to the remaining parts. The end of stem 25 will be clear of the plate 60, and screws 36 are accessible under the lower edge of the plate 60, and screws 36, the cap 34, the spring 33, and the plug 24 may now be removed from the valve, for any desired purposes, as can readily be seen.

It will be observed that all bolts, nuts, etc., and all working parts, except handles 27, are completely concealed, that the enamelled surface of plate 60 is out of contact with any other stove part and the manipulation of plate 60 for purposes of valve servicing is as unnecessary as it is undesirable.

Another method of servicing the valves is to remove handles 27, loosen brackets 47, remove the mixing tubes, and break the connection between pipe 42 and themanifold, whereupon the manifold can be swung inwardly on elbow 57 as a vertical axis, as is shown in dotted lines, Fig. 3, to a position away from front plates 60 and 13,

S othus permitting the removal of any valve for servicing.

Now having described the invention and the preferred embodiment thereof, it is to be understood that the said invention is to be limited, not to the specific details herein set forth, but only by the scope of the claims which follow:

What I claim is:

i 1. In a gas range, the combination of a frame, a manifold supporting plate secured thereto, a manifold removably supported behind said plate, and a finishing plate in front of and supported by and secured to said manifold plate.

2. In a gas range, the combination of a frame, a manifold supporting plate secured thereto, a manifold removably supported behind said plate and a finishing plate in front of and supported by and secured to said manifold plate, and a plurality of valves connected to said manifold and having stems projecting forwardly of said manifold plate and thru said finishing plate, the forward ends of said stems having handles removably secured thereto and disposed in front of the finishing plate.

3. In a gas range, the combination of a frame, a manifold supporting plate secured thereto, a manifold removably supported behind said plate, and a finishing plate in front of and supported by and secured to said manifold plate, and a gas supply pipe at right angles to and connectedto said manifold, the connection being such that the manifold can be rotated horizontally away from the manifold plate with the point of connection between the manifold and the pipe as a pivot.

l. In a gas range, the combination of an open front frame, a manifold supporting plate secured thereto and covering a portion of the frame opening, a manifold removably supported behind said plate, valves connected to the manifold and having stems projecting forwardly of the plate and having nipples projecting rearwardly, burners and mixing tubes behind the manifold and having mouths in which the valve nipples are disposed, valve servicing screws on the front of the valve, a shutter adjusting screw on the front of the mixing tube mouth, the lower edge of the plate being above the levels of said screws, and a finishing plate in front of said manifoldfplate, valves, and manifold, and

having apertures thru which the valve stems project.

5. In a gas range, the combination of an open front frame, a manifold supporting plate secured thereto and covering a portion of the frame opening, a manifold removably supported behind said plate, valves connected to the manifold and having stems projecting forwardly of the plate and having nipples projecting rearwardly, burners and mixing tubes behind the manifold and having mouths in which the valve nipples are disposed, valve servicing screws on the front of the valve, a shutter adjusting screw on the front of the mixing tube mouth, the lower edge of the plate being above the levels of said screws, and a finishing plate in front of said manifold plate, valves and manifold, and having apertures thru which the valve stems project, the forward ends of said stems having handles removably secured thereto and disposed in front of said finishing plate.

6. In a gas range, the combination of an open front frame, a manifold supporting plate cured thereto and covering a portion of the frame opening, a manifold removably supported behind said plate, valves connected to the manifold and having stems projecting forwardly of the plate and having nipples projecting rea wardly, burners and mixing tubes behindthe manifold and having mouths in which the valve nipples are disposed, valve servicing screws on the front of the valve, a shutter adjusting screw (iii the pipe as a pivot.

on the front of the mixing tube mouth, the lower edge of the plate-being above the levels oflsaid screws, and a finishing plate in front of said manifold plate, valves and manifold, and having apertures thru which the valve stems project, the lower edge of the finishing plate being below the valves and the manifold.

"I. In a gas range, the combination of an open front frame, a manifold supporting plate secured thereto and covering a portion of the frame opening, a manifold removably supported behind said plate, valves connected to the manifold and having stems projecting forwardly of the plate and having nipples projecting rearwardly, manifold and having mouths in which the valve nipples are disposed, valve servicing screws on the front of the valve, a shutter adjusting screw on the front of the mixing tube mouth, the lower edge of the plate being above the levels of said screws, and a finishing plate in front of said manifold plate, valves, and manifold, and having apertures thru which the valve stems project, and a gas supply pipe at right angles to and connected to said manifold, the connection being such that the manifold can be rotated horizontally away from the manifold plate with the point of connection between 8. In a gas range, the combination of an open front frame, a manifold supporting plate secured thereto and covering a portion of the frame opening, a manifold removably supported behind said plate, valves connected to the manifold and having stems projecting forward- 1y of the plate and having nipples projecting rearwardly, burners and mixing tubes behind the manifold and having mouths in which the valve nipples are disposed, valve servicing screws on the front of the valve, a shutter adjusting screw on the front of the mixing tube mouth, the lower edge of the plate being above the levels of saidscrews, anda finishing plate in front of said manifold plate, valves and manifold, and having apertures thru which the valve stems project, and a service drawer in the frame below all of the. aforementioned parts.

9. In a gas range, the combination of an open front frame, a manifold supporting plate secured thereto and covering a portion of the frame opening, a manifold removably supported behind said plate, valves connected to themani-- fold and having stems projecting forwardly of the plate and having nipples projecting rear wardly, burners and mixing tubes behind the manifold and having mouths in which the valve nipples are disposed, valve servicing screws on the frontof the valve, a shutter adjusting screw 'on the front of the mixing tube mouth, the

lower edge of the plate being above the levels of said screws, and a finishing plate in front of said manifold plate, valves and manifold, and having apertures thru which the valve stems project, and a service drawer in the frame below all of the aforementioned parts, and having a front plate adapted to be'disposed flush with the finishing plate.

10. In a gas range, the combination of an open front frame, a manifold supporting plate secured thereto and covering a portion of the frame opening, 'a manifold removably supported behind said plate, valves connected to the manifold and having stems projecting forwardly of the plate and having nipples projecting burners and mixing tubes behind the the manifold and rearwardly, burners and mixing tubes behind the manifold and having mouthsin which the valve nipples are disposed, valve servicing screws on the front of the valvepa shutter adjusting screw on the front of the mixing tube mouth, the lower edge of the plate being above the levels of said screws, and a finishing plate in front of said manifold plate, valves and manifold, and having apertures which the valve stems project, and a service thru drawer in the frame below all of the aforemen-- tioned parts, the service drawer when removed, providing a space thru which may be passed a tool for manipulating the valve servicing screws and the shutter adjusting screw.

11. In a gas range, the combination of an open front frame, a manifold supporting plate secured theretorand covering a portion of the frame opening, a manifold removably supported be hind said plate, valves connected to the manifold and having stems projecting forwardly of the plate and having nipples projecting rearwardly, burners and mixing tubes behind the manifold and having mouths in which the valve nipples are disposed, valve servicing screws on the front of the valve, a shutter adjusting screw" on. the front of the tube mouth, the lower edge of the plate being above the levels of said screws, and a finishing plate in front of said manifold plate, valves and manifold, and having apertures thru which the valve stems project, the forward ends of said stems having handles removably secured thereto and disposed in front of said finishing plate, the lower edge of the finishing plate being below'the valves and the manifold.

12. In a gas range, the combination of an open front frame, a manifold supporting plate secured valves and manifold, and having apertures thru which the valve stems project, the forward ends of said stems having handles removably secured thereto and disposed. in front of said finishing plate, the lower edge of the finishing plate being belowthe valves and the manifold, and a service drawer in the frame below all of the aforementioned parts.

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13. In a gas range, the combination of an open front frame, a manifold supporting plate secured thereto and covering a portion of the frame opening, a manifold reinovably supported behindsaid plate, valves connected to the mani fold and having stems projecting forwardly of the plate and having nipples projecting rearwardly, burners and mixing tubes behind the manifold and having mouths in which the valve nipples are disposed, valve servicing screws on the front of the valve, a shutter adjusting screw on the front of the mixing tube mouth, the

lower edge of the plate being above the levels of said screws, and a finishing plate in front of said manifold plate, valves and manifold, and having apertures thru which the valve stems project, the forward ends of said stems having its handles removably secured thereto and disposed in front of said finishing plate, the lower edge or" the finishing plate being below the valves and the manifold, and a service drawer in the frame below all of the aforementioned-parts and having a front plate adapted to be disposed flush with the finishing plate, the service drawer, when removed, providing a space thru which may be passed a tool for manipulating the valve servicing screws and the shutter adjusting screw.

14. In a gas range, the combination of a front wall including two parallel separated plates, a manifold supported by the inner plate, valves connected to said manifold and having rotatable valve stems extending under the inner plate and protruding thru the outer plate.

HENRY C. MAUL. 

